Alright, let's work through 6524 times 1015 step by step
6524 × 1015 = 1015 × (6524)
+ 1015 × 4 giving us 4060
+ 1015 × 20 resulting in 20300
+ 1015 × 500 what gives us 507500
+ 1015 × 6000 what gives us 6090000

= 6621860
